脉冲载荷形状对锥壳瞬态响应的影响

Effects of Pulse Loading Shape on Transient Response of Conical Shells

在进行锥壳结构瞬态响应试验之前,需要考虑各种因素对试验结果的影响。而所要施加的脉冲载荷形状是要考虑的重要因素之一。本文利用数值模拟方法研究了锥壳在侧向脉冲载荷作用下,脉冲形状对结构响应的影响。分析表明,在作用冲量相同,作用时间一致且远小于结构响应周期的条件下,脉冲形状对壳体的瞬态响应结果没有明显的影响。

Before the experiments to the transient responses of conical shells under impulsive loading, the effect of many factors on the experimental results should be considered, while the pulse shape on the conical shells is one of the important factors. In this paper, a numerical method is applied to study the effects of pulse shape to the transient responses of conical shells under the lateral impulsive loading. It shows that under the conditions of the same of impulse and loading time, while the loading time by far less than the response period of the conical shell, the effects of pulse shape on the transient responses are not important.